Home / 11,153.82-15,392.27-6,438.10

Finding the Fourth Proportional to 11,153.82, 15,392.27 and 6,438.10

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Solution

The fourth proportional to 11,153.82, 15,392.27 and 6,438.10 is: 8,884.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.82 : 15,392.27 = 6,438.10 : x
  2. Step 2: Convert to fraction form
    11,153.82/15,392.27 = 6,438.10/x
  3. Step 3: Cross multiply
    11,153.82x = 15,392.27 × 6,438.10
  4. Step 4: Simplify right side
    11,153.82x = 99,096,973.49
  5. Step 5: Solve for x
    x = 99,096,973.49/11,153.82
  6. Step 6: Final answer
    x = 8,884.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.